XI'AN KOSUN MACHINERY CO.,LTD. was established in 1992, and has dedicated herself to manufacturing of solids control system and equipment in oil and gas industry as a modern manufacturing enterprise being involved in the R&D, production, sales and service. Presently, KOSUN 's manufacturing base is in Xi'an, and Beijing as the center of sales and marketing. At the same time,among the area of Xinjiang, Chengdu, Nanyang, and Dongying, the sales and after-sales network was established, it's market is covering major domestic oil fields, and the buyers include CNPC,Sinopec,CNOOC and all of their subsidiary oil fields and companies.